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前牙开作为常见错牙合畸形影响患者口颌功能和颜面美观.其病因复杂,治疗难度大,复发风险高.早期开牙合治疗利用患者生长潜力,改善颌面部垂直向生长异常,减轻后期治疗负担,备受推崇.各类矫治器通过阻断口腔不良习惯、调节异常肌功能、抑制颌骨垂直向发育等作用解除开.本文旨在探究前牙开牙合早期治疗时机以及各类矫治器的临床应用、疗效及稳定性.“,”Anterior open-bite is one common kind of malocclusion,which has an adverse effect on oral function and facial aesthetics. Comprehensive etiological factors,complicated therapy as well as ambiguous results make it a puzzling issue. Early intervention makes the most of growth potential to rectify maxillofacial discrepancy in vertical direction and has been widely recognized as a favorable choice due to effectiveness/efficiency,stableness and that it simplifies further treatment. Multiple appliances in practice are designed by bloc-king bad habits,mediating muscle function and inhibiting vertical skeletal development. This article aims to make an overall review on the appropriate time of early intervention as well as the clinical application,effectiveness and stableness of diverse appliance.